mikiet wrote:
Hi , further to my previous message, I've done a lot of head scratching and
experimentation and have managed to refine the problem.......
I removed the SrcSQL from my OVF file and replaced it with a SrcLayer
At first I still received no annotations, however when i zoomed in by
changing the map extents my annotations appeared.
I can put this second issue (the annotations only appearing at a zoomed in
view) down to the performance required to annotate quite a large number of
point on the map. However my way to get around this was to use the SrcSQL
to limit the number of points being brought back. Can anyone tell me if
there is a problem using this with ODBC/OVF as I was not having the problem
using the OVF with my MySQL database...
Mike,
I'm not exactly sure why you are running into problems. I will say that
MapServer "query" stuff can be problematic when operating against an OVF
with a SrcSQL because confusion occurs between the initial query pass, and
the later per-feature fetching over what the feature id's of a record should
be. For this reason (and some performance issues) I generally try to
discourage use of SrcSQL.
But this doesn't seem to exactly explain the problem you are seeing.
Best regards,
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